for (var i in arr) {
console.log(arr.sort()[i]);
}
n = 3;
while (n) {
console.log(arr.sort()[n-1]);
n--;
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用户7629784270
for (var i in arr) {
console.log(arr.sort()[i]);
}
n = 3;
while (n) {
console.log(arr.sort()[n-1]);
n--;
}